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    • 2. 发明申请
    • OPTICAL SIGNAL AMPLIFICATION
    • 光信号放大
    • WO2016169653A1
    • 2016-10-27
    • PCT/EP2016/000647
    • 2016-04-21
    • ALCATEL LUCENT
    • POEHLMANN, WolfgangBONK, Rene
    • H04B10/2587H04B10/29
    • H04Q11/0067H04B10/2587H04B10/29H04Q2011/0035H04Q2011/0039
    • A method for optical signal amplification in an optical communication system is presented. The optical communication system comprises an optical line terminal, a plurality of optical network units, an optical splitter and a plurality of circulators. The optical network units comprise each an optical amplifier. A first optical signal is sent in a downstream direction from the optical line terminal to a first circulator from the plurality of circulators. The first optical signal is further sent from the first circulator to a first optical network unit from the plurality of optical network units and it bypasses the optical splitter. The first optical signal is amplified in the optical amplifier of the first optical network unit to generate an amplified optical signal. The amplified optical signal is sent from the first optical network unit to the first circulator through the optical splitter and is further sent from the first circulator to a further of the plurality of optical network units.
    • 提出了一种在光通信系统中进行光信号放大的方法。 光通信系统包括光线路终端,多个光网络单元,光分路器和多个循环器。 光网络单元包括每个光放大器。 第一光信号从多个循环器从光线路端子向下游方向发送到第一循环器。 第一光信号从多个光网络单元进一步从第一循环器发送到第一光网络单元,并且它绕过光分路器。 第一光信号在第一光网络单元的光放大器中被放大,以产生放大的光信号。 放大的光信号通过光分路器从第一光网络单元发送到第一循环器,并且进一步从第一循环器发送到多个光网络单元中的另一个。
    • 3. 发明申请
    • METHOD OF RECEIVING A WAVELENGTH DIVISION MULTIPLEXED OPTICAL UPSTREAM SIGNAL IN AN OPTICAL ACCESS NETWORK
    • 光接入网络中接收波长多路复用光信号上行信号的方法
    • WO2015150028A1
    • 2015-10-08
    • PCT/EP2015/054903
    • 2015-03-10
    • ALCATEL LUCENT
    • POEHLMANN, Wolfgang
    • H04B10/572
    • H04B10/27H04B10/07955H04B10/07957H04B10/272H04B10/572
    • Proposed is a method of receiving a WDM optical upstream signal in an optical access network. The WDM signal is filtered using a first optical filter yielding a first filtered signal. The first optical filter has a flat-top shaped pass-band transfer function. Furthermore the WDM signal is filtered using second optical filter yielding a second filtered signal. The second optical filter has a pass-band transfer function that is strictly monotonically increasing for wavelength values below a center wavelength of the transfer function and that is strictly monotonically decreasing for wavelength values above the center wavelength of the transfer function. Received upstream data is derived from the first filtered signal. An optical signal power level is derived from the second filtered signal an optical signal power level. Finally, it is indicated to an optical network unit a desired direction of wavelength shift in dependence on the derives signal power level.
    • 提出了一种在光接入网中接收WDM光上行信号的方法。 使用产生第一滤波信号的第一滤光片对WDM信号进行滤波。 第一滤光器具有平顶形的通带传输功能。 此外,使用产生第二滤波信号的第二滤光片对WDM信号进行滤波。 第二光学滤波器具有对于低于传递函数的中心波长的波长值严格单调递增的通带传递函数,并且对于高于传递函数的中心波长的波长值,其严格单调递减。 接收到的上行数据是从第一个滤波信号导出的。 光信号功率电平是从第二滤波信号导出的光信号功率电平。 最后,根据导频信号功率电平向光网络单元指示期望的波长偏移方向。